Patent US3898776A successfully refreshed from Google Patents.
US3898776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precast concrete housing
Assignee: H B ZACHARY CO
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Filing: 1973-07-02
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Granted: 1975-08-12
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Expires: 1993-07-02
Abstract
Abstract A pair of precast concrete building units are joined together to form a modular concrete house. Each concrete building unit includes a floor slab, upright load-bearing exterior walls joined with the perimeter of the floor slab, and a sloping roof cast integrally with the tops of the exterior walls. The building units are arranged so that the roof of each unit slopes upwardly toward the other unit, with the elevated ends of the roofs meeting to form an inverted V-shaped pitch roof. Interior walls are cast integrally with the exterior walls and the roof to divide the building units into separate rooms. The bottoms of the interior walls are spaced above the floor slab so that no loads are transmitted to the floor slab by the walls, and plumbing and wiring are run through the space between the bottom of the interior walls and the floor slab. A reinforcing cage formed from welded wire mesh is embedded in each exterior wall.
Inventors
- 👤 Elmer Adrian Cox
- 👤 Wayne Douglas Tiner
- 👤 Jr Ritchey Paul Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:12
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/348; E04B1/34815; E04B1/34823
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
99 words
A precast concrete building unit comprising a floor slab, several precast concrete structural panels above the floor slab, said structural panels comprising at least two load-bearing exterior walls joined with the floor slab, a roof cast integrally with the exterior walls, and an interior wall having an end which is cast integrally with at least one of the exterior walls and a top which is cast integrally with the roof, the interior wall having an undersurface spaced from the upper surface of the floor slab so that the interior wall does not transmit a load to the floor slab.
Claim 2
Dependent Claim
99 words
A precast concrete building unit comprising a floor slab, several precast concrete structural panels above the floor slab, said structural panels comprising at least two load-bearing exterior walls joined with the floor slab, a roof cast integrally with the exterior walls, and an interior wall having an end which is cast integrally with at least one of the exterior walls and a top which is cast integrally with the roof, the interior wall having an undersurface spaced from the upper surface of the floor slab so that the interior wall does not transmit a load to the floor slab.
Claim 3
Dependent Claim
50 words
Apparatus according to claim 1 in which the roof of the building unit is sloped so that the elevated portion of the roof may be joined with the elevated portion of the roof on a substantially identical building unit to form a modular house with an inverted V-shaped pitch roof.
Claim 4
Dependent Claim
46 words
Apparatus according to claim 1 including an elongated strip of molding on each side of the interior wall for covering the space between the floor slab and the bottom of the interior wall to form an enclosed area for electrical cables, plumbing lines, and the like.
Claim 5
Dependent Claim
99 words
A precast concrete building uNit for mounting on a floor slab, the building unit comprising at least two upright load-bearing exterior walls, each exterior wall having a respective bottom edge, means for joining the exterior walls to the floor slab, and an interior wall cast integrally with at least one of the exterior walls, the interior wall having a bottom edge which is spaced above the bottom edge of each exterior wall a sufficient distance such that the interior wall does not transmit a load to the floor slab when the exterior walls are joined with the floor slab.
Claim 6
Dependent Claim
99 words
A precast concrete building uNit for mounting on a floor slab, the building unit comprising at least two upright load-bearing exterior walls, each exterior wall having a respective bottom edge, means for joining the exterior walls to the floor slab, and an interior wall cast integrally with at least one of the exterior walls, the interior wall having a bottom edge which is spaced above the bottom edge of each exterior wall a sufficient distance such that the interior wall does not transmit a load to the floor slab when the exterior walls are joined with the floor slab.
Claim 7
Dependent Claim
33 words
Apparatus according to claim 4 including a roof cast integrally with the tops of the exterior walls, and in which the interior wall has a top which is cast integrally with the roof.
Claim 8
Dependent Claim
83 words
Apparatus according to claim 5 in which the roof of the building unit slopes upwardly toward one end of the building unit, and including a second identical building unit having a roof which slopes upwardly toward one end, the two building units being arranged so the elevated ends of the roofs are adjacent each other, and means for joining together the elevated ends of the two roofs so the two building units form a modular dwelling unit with an inverted V-shaped pitch roof.
Claim 9
Dependent Claim
76 words
Apparatus according to claim 6 in which one of said exterior walls of each building unit is cast integrally with the elevated end of the roof of its respective building unit, and in which the elevated end of each sloping roof is formed as a cantilevered overhang above its respective exterior wall so the two building units form an elongated corridor between the two exterior walls when the elevated ends of the roofs are joined together.
Claim 10
Dependent Claim
98 words
A precast concrete building unit comprising a floor slab, at least one structural panel above the floor slab, an interior wall cast integrally with the structural panel, the undersurface of the interior wall being spaced from the upper surface of the floor slab so that the interior wall does not transmit a load to the floor slab, and an elongated strip of molding on each side of the interior wall for covering the space between the floor slab and the bottom of the interior wall to form an enclosed area for electrical cables, plumbing lines, and the like.
Claim 11
Dependent Claim
98 words
A precast concrete building unit comprising a floor slab, at least one structural panel above the floor slab, an interior wall cast integrally with the structural panel, the undersurface of the interior wall being spaced from the upper surface of the floor slab so that the interior wall does not transmit a load to the floor slab, and an elongated strip of molding on each side of the interior wall for covering the space between the floor slab and the bottom of the interior wall to form an enclosed area for electrical cables, plumbing lines, and the like.
Claim 12
Dependent Claim
67 words
Apparatus according to claim 8 including several precast concrete structural panels above the floor slab, said structural panels comprising at least two load-bearing exterior walls joined with the floor slab, and a roof cast integrally with the exterior walls, the interior wall having an end which is cast integrally with at least one of the exterior walls and a top which is cast integrally with the roof.
Claim 13
Dependent Claim
179 words
A precast concrete building unit comprising a floor structure having a top surface, at least one upright cast concrete load-bearing exterior wall joined with the floor structure and extending above the top surface of the floor structure, a roof cast integrally with at least one of the exterior walls, and an interior wall having an end which is cast integrally with at least one of the exterior walls and a top which is cast integrally with the roof, the interior wall being supported above the top surface of the floor structure by the exterior wall and roof with which it is cast, the interior wall extending for a major portion of the height of the exterior wall with which it is cast and having an undersurface spaced above the top surface of the floor structure so that the interior wall does not transmit a load to the floor structure and so that the space between the undersurface of the interior wall and the top surface of the floor structure provides room for electrical cables, plumbing lines, and the like.
Claim 14
Dependent Claim
179 words
A precast concrete building unit comprising a floor structure having a top surface, at least one upright cast concrete load-bearing exterior wall joined with the floor structure and extending above the top surface of the floor structure, a roof cast integrally with at least one of the exterior walls, and an interior wall having an end which is cast integrally with at least one of the exterior walls and a top which is cast integrally with the roof, the interior wall being supported above the top surface of the floor structure by the exterior wall and roof with which it is cast, the interior wall extending for a major portion of the height of the exterior wall with which it is cast and having an undersurface spaced above the top surface of the floor structure so that the interior wall does not transmit a load to the floor structure and so that the space between the undersurface of the interior wall and the top surface of the floor structure provides room for electrical cables, plumbing lines, and the like.
Claim 15
Dependent Claim
30 words
Apparatus according to claim 10 in which the floor structure is a precast concrete floor slab, and including means joining the bottoms of the exterior walls to the floor slab.
Claim 16
Dependent Claim
25 words
Apparatus according to claim 10 including a plumbing line for the building unit disposed in the space between the interior wall and the floor structure.
Claim 17
Dependent Claim
132 words
A precast concrete Bilding unit comprising a floor slab having a top surface, at least one upright cast concrete load-bearing exterior wall joined with the floor slab and extending above the top surface of the floor slab, a roof cast integrally with the exterior walls, and an interior wall cast integrally with at least one of the exterior walls and with the roof so the interior wall extends over the floor slab, the interior wall having an undersurface which is spaced above the top surface of the floor slab so the interior wall does not transmit a load to the floor slab and so that the space between the undersurface of the interior wall and the top surface of the floor slab provides room for electrical cables, plumbing lines, and the like.
Claim 18
Dependent Claim
132 words
A precast concrete Bilding unit comprising a floor slab having a top surface, at least one upright cast concrete load-bearing exterior wall joined with the floor slab and extending above the top surface of the floor slab, a roof cast integrally with the exterior walls, and an interior wall cast integrally with at least one of the exterior walls and with the roof so the interior wall extends over the floor slab, the interior wall having an undersurface which is spaced above the top surface of the floor slab so the interior wall does not transmit a load to the floor slab and so that the space between the undersurface of the interior wall and the top surface of the floor slab provides room for electrical cables, plumbing lines, and the like.
Claim 19
Dependent Claim
47 words
Apparatus according to claim 13 including an elongated strip of molding on each side of the interior wall for covering the space between the floor slab and the bottom of the interior wall to form an enclosed area for said electrical cables, plumbing lines, and the like.
Claim 20
Dependent Claim
189 words
A precast concrete building unit comprising a floor structure having a top surface, at least one upright cast concrete load-bearing exterior wall joined with the floor structure and extending above the top surface of the floor structure, and an interior wall cast integrally with at least one of the exterior walls and supported above the top surface of the floor structure by the exterior wall with which it is cast, the interior wall extending for a major portion of the height of the exterior wall with which it is cast and having an undersurface spaced above the top surface of the floor structure so that the interior wall does not transmit a load to the floor structure and so that the space between the undersurface of the interior wall and the top surface of the floor structure provides room for electrical cables, plumbing lines, and the like, and an elongated strip of molding on each side of the interior wall for covering the space between the floor structure and the undersurface of the interior wall to form an enclosed area for said electrical cables, plumbing lines, and the like.
Claim 21
Dependent Claim
189 words
A precast concrete building unit comprising a floor structure having a top surface, at least one upright cast concrete load-bearing exterior wall joined with the floor structure and extending above the top surface of the floor structure, and an interior wall cast integrally with at least one of the exterior walls and supported above the top surface of the floor structure by the exterior wall with which it is cast, the interior wall extending for a major portion of the height of the exterior wall with which it is cast and having an undersurface spaced above the top surface of the floor structure so that the interior wall does not transmit a load to the floor structure and so that the space between the undersurface of the interior wall and the top surface of the floor structure provides room for electrical cables, plumbing lines, and the like, and an elongated strip of molding on each side of the interior wall for covering the space between the floor structure and the undersurface of the interior wall to form an enclosed area for said electrical cables, plumbing lines, and the like.
Claim 22
Dependent Claim
26 words
Apparatus according to claim 15 including a plumbing line for the building unit disposed in the enclosed area between the interior wall and the floor structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |